Nope, all 13k after. The 6k that's registered is probably all while I had the game open, so the rest hasn't synced, despite me being logged into Google Fit, adventure sync on etc. Really disappointing, I wanted to make this the first week I hit 50k but it's not gonna happen now.
Was the app suspended or closed? I suspect that if the app is suspended that it'll prefer GPS over steps, but I'm really not sure how it works.
I've had periods where I'm clearly not getting the distance I go. But usually if the app is closed and I'm walking, even on a treadmill, it gets most of the distance.